51问答网 > 10克碳酸钙与100克稀盐酸恰好完全反应．问：（1）产生二氧化碳气体多少克？（2）稀盐酸的质量分数是多少

10克碳酸钙与100克稀盐酸恰好完全反应．问：（1）产生二氧化碳气体多少克？（2）稀盐酸的质量分数是多少

2025-03-14 22:12:21
推荐回答（1个）
回答1：

（1）设生成二氧化碳的质量为x，反应的氯化氢的质量为y，
  CaCO3+2HCl═CaCl2+H2O+CO2↑，
   100   73             44
   10g   y              x
100
10g
=
73
y
=
44
x
，
x=4.4g，y=7.3g，
答：生成了4.4g二氧化碳．
（2）稀盐酸的质量分数为：
7.3g
100g
×100%=7.3%，
答：稀盐酸的质量分数为7.3%．

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